QUOTE(kinkeet @ Jun 5 2013, 08:37 PM)
hi, wanna ask for opinions here, i seldom drive my persona (2.5 years) and mileage is very low..
Sometimes go for service change oil, gasket and filter feel a bit waste.. I heard that if change to fully synthetic oil, the quality of the oil can last longer.. Is it ok to skip some minor service by using fully synthetic oil?
If you car is under warranty, you still have to follow the maintenance schedule, no choice. Changing to FS under warranty with low mileage is indeed cheaper (6 months vs semi 3 months) and actually recommended, assuming SC FS is NOT weighted 10W50 (50 weight strongly not recommended).
If warranty is no longer a concern, it will be MUCH cheaper to keep using the semi but drag out to 6 month change (as long as mileage is around or below 5K, whichever comes first).
Lube oxidization in our country is pretty high due to hot AND HUMID weather. So 6 months should be the general guideline limit before lube oxidization (turned acidic) get worse.
Changing at recommended 3 months interval does has its advantage as it ensure clean engine with minimal oxidization damage.
Personally for my other low mileage car, I did use a good FS with 6 months change interval, regardless of it reaching 5K mileage or not. Long term wise, its very good for the engine cleanliness and good performance. For high mileage car, dragging 10K mileage is not my cup of tea but it works for others. I prefer to use semi at 5K changed to ensure cleaner engine than 10K for FS unless you can get a very good quality oil filter to withstand 10K filteration.
This post has been edited by Cavino: Jun 6 2013, 09:38 AM